CA01082E_Catalog 30

Products – Porcelain Housed Surge Arresters – MH4

MH4 Electrical Characteristics

Temporary Overvoltage Capability (kVrms)

Maximum Steep Current Impulse Residual Voltage (kV)

Maximum Switching Impulse Residual Voltage (kV)

Maximum Lightning Impulse Residual Voltage (kV)

Base Arrester Catalog Number

Um (kV)

Ur (kV)

Uc (kV)

1s

10s 31.1 34.2 37.3 40.4 43.5 49.7 52.8 55.9 62.1 55.9 62.1 68.3 74.5 77.6 80.7 83.8 86.9 86.9 93.2 99.4 93.2 99.4 112 124 137 143 112 124 137 143 149

20kA

0.5kA 1kA 2kA 5kA 10kA 20kA 40kA

MH4036wx030yz 36 30 24 33.2 MH4036wx033yz 36 33 26.4 36.5 MH4036wx036yz 36 36 28.8 39.8 MH4036wx039yz 36 39 31.2 43.1 MH4052wx042yz 52 42 33.6 46.4 MH4052wx048yz 52 48 38.4 53 MH4052wx051yz 52 51 40.8 56.4 MH4052wx054yz 52 54 43.2 59.7 MH4052wx060yz 52 60 48 66.3 MH4072wx054yz 72 54 43.2 59.7 MH4072wx060yz 72 60 48 66.3 MH4072wx066yz 72 66 52.8 72.9 MH4072wx072yz 72 72 57.6 79.6 MH4072wx075yz 72 75 60 82.9 MH4072wx078yz 72 78 62.4 86.2 MH4072wx081yz 72 81 64.8 89.5 MH4072wx084yz 72 84 67.2 92.8 MH4100wx084yz 100 84 67.2 92.8 MH4100wx090yz 100 90 72 99.5 MH4100wx096yz 100 96 76.8 106 MH4123wx090yz 123 90 72 99.5 MH4123wx096yz 123 96 76.8 106 MH4123wx108yz 123 108 86.4 119 MH4123wx120yz 123 120 96 133 MH4123wx132yz 123 132 105.6 146 MH4123wx138yz 123 138 110.4 152 MH4145wx108yz 145 108 86.4 119 MH4145wx120yz 145 120 96 133 MH4145wx132yz 145 132 105.6 146 MH4145wx138yz 145 138 110.4 152 MH4145wx144yz 145 144 115.2 159

85

59

60.5 62.5 67.5 70.5 75.5 83.5

93.5 102 110 119 136 145 153 170 153 170 187 203 212 220 230 238 238 255 272 255 272 306 339 373 390 306 339 373 390 403

64.5 66.5 68.5

74

77.5

83

91.5 100 108 117 134 142 150 167 150 167 183 200 208 216 225 234 234 250 267 250 267 300 333 366 382 300 333 366 382 395

70.5 72.5 74.5 80.5 84.5 90.5

76

78.5

81

87.5 91.5

98

82.5

85 97

87.5 94.5

99

106 121 129 136 151 136 151 166 181 189 196 205 212 212 227 242 227 242 272 302 332 347 272 302 332 347 359

94

100 106 112 125 112 125 137 149 156 162 169 175 175 187 200 187 200 224 249 274 286 224 249 274 286 296

108 115 121 135 121 135 148 161 168 175 182 189 189 202 216 202 216 242 269 296 309 242 269 296 309 319

113 120 127 141 127 141 155 169 176 183 191 198 198 212 226 212 226 254 282 310 324 254 282 310 324 335

100 106 118 106 118 129 141 147 152 159 165 165 176 188 176 188 211 235 258 269 211 235 258 269 279

103 109 121 109 121 133 145 151 157 164 170 170 182 194 182 194 217 241 265 277 217 241 265 277 287

Page 51 | October 2023